Many applications require holes to be drilled or punched into sheet metal. As with any other typical fabrication task, there isnt always a right or wrong way to do the job. But, sometimes there is ...

For clean, precise holes in thin sheet metal, make a wood sandwich. Simply sandwich the sheet metal between two pieces of wood and clamp everything down on a table or workbench.

With the fate of repetitive motion injury looming due to the need to drill 1,200 holes, [bitluni] took matters into his own hands and built this nifty DIY hole punch for light-gauge sheet metal.